18258338047 has 2 divisors, whose sum is σ = 18258338048. Its totient is φ = 18258338046.

The previous prime is 18258338041. The next prime is 18258338053. The reversal of 18258338047 is 74083385281.

It is a balanced prime because it is at equal distance from previous prime (18258338041) and next prime (18258338053).

It is a cyclic number.

It is not a de Polignac number, because 18258338047 - 2¹¹ = 18258335999 is a prime.

It is a super-3 number, since 3×18258338047³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18258338041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9129169023 + 9129169024.

It is an arithmetic number, because the mean of its divisors is an integer number (9129169024).

Almost surely, 2^18258338047 is an apocalyptic number.

18258338047 is a deficient number, since it is larger than the sum of its proper divisors (1).

18258338047 is an equidigital number, since it uses as much as digits as its factorization.

18258338047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 18258338047 in words is "eighteen billion, two hundred fifty-eight million, three hundred thirty-eight thousand, forty-seven".